The green triangles in Excel indicate potential errors or inconsistencies in your data. While they can be helpful, they can also be distracting and annoying. Here's how to get rid of them:

1. Click on the cell or range of cells with the green triangles.
2. Click on the small green triangle that appears in the top-left corner of the cell(s).
3. Select "Ignore Error" from the drop-down menu.
4. The green triangle should disappear from the cell(s).

If you want to disable the error checking feature altogether, you can do so by following these steps:

1. Click on the "File" tab in the ribbon.
2. Click on "Options" in the left-hand menu.
3. Click on "Formulas" in the left-hand menu.
4. Under "Error Checking Rules", uncheck the boxes next to the types of errors you want to ignore.
5. Click "OK" to save your changes.

Alternatively, you can also turn off error checking for a specific worksheet by following these steps:

1. Click on the "Formulas" tab in the ribbon.
2. Click on "Error Checking" in the "Formula Auditing" section.
3. Select "Error Checking Options" from the drop-down menu.
4. Uncheck the boxes next to the types of errors you want to ignore.
5. Click "OK" to save your changes.

I hope this helps you get rid of those pesky green triangles!